/**
 * Copyright © 2024 Apple Inc. and the Pkl project authors. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.pkl.core.ast.internal;

import com.oracle.truffle.api.frame.VirtualFrame;
import org.pkl.core.ast.ExpressionNode;
import org.pkl.core.module.ModuleKeys;
import org.pkl.core.runtime.*;

public final class GetBaseModuleClassNode extends ExpressionNode {
  private final Identifier className;

  public GetBaseModuleClassNode(Identifier className) {
    this.className = className;
  }

  @Override
  public Object executeGeneric(VirtualFrame frame) {
    var current = VmUtils.getOwner(frame);
    var parent = current.getEnclosingOwner();
    while (parent != null) {
      current = parent;
      parent = parent.getEnclosingOwner();
    }

    assert ModuleKeys.isBaseModule(VmUtils.getModuleInfo(current).getModuleKey());

    var result = VmUtils.readMember(current, className);
    assert result instanceof VmClass;
    return result;
  }
}
